Source Note: Cy, DNA, RG 45, Entry 517B. The handwritten date is confirmed by the time/date notation following the text. Someone has handwritten an identifying number below the table: “3/C/J.”

Footnote 1: This cable has not been found.

Footnote 2: Because creating a mine barrage in the Mediterranean required laying mines at great depths, a special type of mine was needed. The Bureau of Ordnance had a developed a prototype they believed would work, but it was necessary to conduct tests before beginning manufacture. “No vessel was available in the United States for this purpose, so the Baltimore was ordered home to carry out the required experiments.” It was had proceeded as far as Pentland Firth with the mine laying squadron as part of the “tenth excursion,” when it was ordered to Scapa Flow to obtain routing instructions to return home. Northern Barrage: 117.